JuliaIO/NIfTI.jl

Name: NIfTI.jl

Owner: JuliaIO

Description: Julia module for reading/writing NIfTI MRI files

Created: 2013-01-20 23:17:51.0

Updated: 2017-10-30 12:27:27.0

Pushed: 2017-10-30 09:55:09.0

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Size: 1085

Language: Julia

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README

NIfTI.jl

Usage

To read a NIfTI file:

g NIfTI
 niread("my.nii")
 niread("my.nii.gz") # gzipped NIfTI files are detected automatically

The header is in nii.header; NIfTI extensions are in nii.extensions; the raw volume is in nii.raw.

To mmap the NIfTI file:

 niread("my.nii", mmap=true)

To get the TR and voxel size:

e = voxel_size(ni.header)    # In mm
 time_step(ni.header)        # In ms

To get the value of the volume along a given dimension:

vox(ni, x, y, z, t)       # Scaled by slope and intercept given in header, zero-based indexes
ni[x, y, z, t]            # Scaled by slope and intercept given in header, one-based indexes
ni.raw[x, y, z, t]        # Unscaled, one-based indexes

Colons works everywhere, even with vox

To write a volume:

ite("my.nii", ni)

It is also possible to construct a new volume from scratch; see the NIVolume constructor in the source for documentation.